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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Forum Posts

Steveo
by New Contributor II
  • 1354 Views
  • 1 replies
  • 0 kudos

In Databricks, when saving a query, the changes do no persist. Any advice?

When returning to the query, the changes have reverted.Is this because the query is open by another user?How can this be resolved? #databricks

  • 1354 Views
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Latest Reply
Steveo
New Contributor II
  • 0 kudos

We ARE using the save feature. But we are still loosing changes. Is this because we have multiple Databricks tabs open in separate Chrome browsers? Across 2 users.

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gazzyjuruj
by Contributor II
  • 22541 Views
  • 9 replies
  • 8 kudos

Resolved! Failed to start cluster

Hi, I ran the cluster more than 5-6 times with it failing to start since this past morning (about 11-12 hours now) since i'm facing this problem.Attaching screenshot below and also typing in case someone comes from the web to this thread in future.Pr...

IMG_2152 IMG_2151
  • 22541 Views
  • 9 replies
  • 8 kudos
Latest Reply
worthpicker
New Contributor II
  • 8 kudos

The cluster will be able to start and the nodes will automatically obtain the updated cluster configuration data.

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labromb
by Contributor
  • 2612 Views
  • 0 replies
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Converting a text widget to a list

Hi, Been working on some parallel notebook code, which I have ported to python from the example on the DB website and added some exception handling and that works fine. What I would like to do is paramterise the input but am not succeeding as the fun...

  • 2612 Views
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anmol_deep
by New Contributor III
  • 3967 Views
  • 2 replies
  • 2 kudos

How to restore DatabricksRoot(FileStore) data after Databricks Workspace is decommissioned?

My Azure Databricks workspace was decommissioned. I forgot to copy files stored in the DatabricksRoot storage (dbfs:/FileStore/...).Can the workspace be recommissioned/restored? Is there any way to get my data back?Also, is there any difference betwe...

  • 3967 Views
  • 2 replies
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Latest Reply
User16764241763
Honored Contributor
  • 2 kudos

Hello @Anmol Deep​  Please submit a support request ASAP, so we can restore the deleted workspace. You can recover artifacts from the workspace.

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zach
by New Contributor III
  • 3699 Views
  • 4 replies
  • 1 kudos

Does Databricks have a google cloud Big Query equivalent of --dry_run to estimate costs before executing?

Databricks uses DBU's as a costing unit whether based onto of AWS/Azure/GCP and I want to know if Databricks has a google cloud Big Query equivalent of --dry_run for estimating costs? https://cloud.google.com/bigquery/docs/estimate-costs

  • 3699 Views
  • 4 replies
  • 1 kudos
Latest Reply
-werners-
Esteemed Contributor III
  • 1 kudos

Not that I know of.Google uses number of bytes read to determine the cost.Databricks uses DBU. The number of DBU's spent is not only dependent on the amount of bytes read (the more you read, the longer the program will run probably), but also the typ...

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BeginnerBob
by New Contributor III
  • 3067 Views
  • 3 replies
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Loading Dimensions including SCDType2

I have a customer dimension and for every incremental load I am applying type2 or type1 to the dimension.This dimension is based off a silver table in my delta lake where I am applying a merge statement.What happens if I need to go back and track ad...

  • 3067 Views
  • 3 replies
  • 1 kudos
Latest Reply
BeginnerBob
New Contributor III
  • 1 kudos

Thanks werners,I was informed you could essentially recreate a type 2 dimensions from scratch, without reading the files 1 by 1, using the delta lake time shift. However, this doesn't seem to be the case and the only way to create this is to incremen...

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alonisser
by Contributor II
  • 10270 Views
  • 8 replies
  • 6 kudos

Failing to install a library from dbfs mounted storage (adls2) with pass through credentials cluster

We've setup a premium workspace with passthrough credentials cluster , while they do work and access my adls gen 2 storageI can't make it install a library on the cluster from there. and keeping getting"Library installation attempted on the driver no...

  • 10270 Views
  • 8 replies
  • 6 kudos
Latest Reply
alonisser
Contributor II
  • 6 kudos

Sorry I can't figure this out, the link you've added is irrelevant for passthrough credentials, if we add it the cluster won't be passthrough, Is there a way to add this just for a specific folder? while keeping passthrough for the rest?

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Taha_Hussain
by Databricks Employee
  • 1258 Views
  • 0 replies
  • 4 kudos

Databricks Office Hours Register for Office Hours to participate in a live Q&A session with Databricks experts! Our next event is scheduled for Ju...

Databricks Office HoursRegister for Office Hours to participate in a live Q&A session with Databricks experts! Our next event is scheduled for June 22nd from 8:00 am - 9:00am PT.This is your opportunity to connect directly with our experts to ask any...

  • 1258 Views
  • 0 replies
  • 4 kudos
wyzer
by Contributor II
  • 4752 Views
  • 4 replies
  • 2 kudos

Resolved! Unable to delete a DBFS folder

Hello everyone,I've created by error a DBFS folder named : ${env]But when I run this command :dbutils.fs.rm("/mnt/${env]")It returns me this error : java.net.URISyntaxException: Illegal character in path at index 12: /mnt/$%7Benv]How can I do please ...

  • 4752 Views
  • 4 replies
  • 2 kudos
Latest Reply
User16764241763
Honored Contributor
  • 2 kudos

Hello @Salah K.​ Can you try below?%sh rm -r /dbfs/mnt/$\{env\]

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3 More Replies
shubhamb
by New Contributor III
  • 4422 Views
  • 2 replies
  • 3 kudos

Why does my Notebook fails if I try to load a function from another Notebook in Repos in Databricks

My function in func.pydef lower_events(df): return df.withColumn("event",f.lower(f.col("event")))My main notebook import pyspark.sql.functions as f from pyspark.sql.functions import udf, col, lower import sys   sys.path.append("..") from folder.func...

  • 4422 Views
  • 2 replies
  • 3 kudos
Latest Reply
shubhamb
New Contributor III
  • 3 kudos

@Kaniz Fatma​  https://community.databricks.com/s/question/0D58Y00008ouo6xSAA/how-to-fetch-environmental-variables-saved-in-one-notebook-into-another-notebook-in-databricks-repos-and-notebooksCan you please look into this

  • 3 kudos
1 More Replies
mortenhaga
by Contributor
  • 3523 Views
  • 2 replies
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Resolved! Importing python function with spark.read.jdbc in to Repos

Hi all!Before we used Databricks Repos we used the run magic to run various utility python functions from one notebook inside other notebooks, fex like reading from a jdbc connections. We now plan to switch to repos to utilize the fantastic CI/CD pos...

image.png image
  • 3523 Views
  • 2 replies
  • 2 kudos
Latest Reply
mortenhaga
Contributor
  • 2 kudos

Thats...odd. I was sure I had tried that, but now it works somehow. I guess it has to be that now I did it with double quotation marks. Thanks anyway! Works like a charm.

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1 More Replies
Marra
by New Contributor III
  • 8108 Views
  • 7 replies
  • 2 kudos

Read temporary views in SQL Analytics

I'm having issues trying to read temporary views in SQL Analytics module. Ive managed to create temporary views based on a query but I don't know how to read from them? Just using the name of the view returns "Table or view not found".

  • 8108 Views
  • 7 replies
  • 2 kudos
Latest Reply
Marra
New Contributor III
  • 2 kudos

No, I'm actually having issues reading from the view in the same session that created it. Using the same view name I get a table or view not found.

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AndriusVitkausk
by New Contributor III
  • 1937 Views
  • 1 replies
  • 1 kudos

Autoloader event vs directory ingestion

For a production work load containing around 15k gzip compressed json files per hour all in a YYYY/MM/DD/HH/id/timestamp.json.gz directoryWhat would be the better approach on ingesting this into a delta table in terms of not only the incremental load...

  • 1937 Views
  • 1 replies
  • 1 kudos
Latest Reply
AndriusVitkausk
New Contributor III
  • 1 kudos

@Kaniz Fatma​ So i've not found a fix for the small file problem using autoloader, seems to struggle really badly against large directories, had a cluster running for 8h stuck on "listing directory" part with no end, cluster seemed completely idle to...

  • 1 kudos

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